The relevance of this study is based on the acute demand for young teachers who are able to quickly respond to changes in the educational situation and to new conditions of professional activity. The introduction of a teacher's professional standard entails changes in training and retraining in higher education. At the same time, the Professional Standard increases a teacher’s responsibility for the results of his/her work, and impose the requirements for his/her qualifications and professional competencies. The problem of the study is the fact that the Professional Standard increases demands on the teacher and it is aimed at achieving the three most important areas of the educational results: education, training and development of children. In this regard, there is a need of creating a model of mentoring in the Kazan Federal University "teacher-student-student", which will be focused on the formation and development of professional competencies of teachers and students of the university. Specifically, it will be concentrated on future elementary school teachers and on students who conduct educational and developmental activities with children of primary school age in the children's theater Kazan who "Rainbow" Federal University. The three-module model of mentoring "teacher-student-student" is aimed at implementing the requirements of the Federal state educational standards of higher and primary education, the Professional standard of the teacher, the development of creative and acting skills of students of grades 1-4. The purpose of the study is to develop a mentorship model "educator-student-pupil" in the children's theater of Kazan Federal University. Methods of this study are the following: theoretical (theoretical analysis of pedagogical, psychological, scientific and methodical literature on the topic of research), empirical (analysis, comparison, synthesis, content selection, observation, questioning), pedagogical experiment (establishing, forming and control stages of the experiment), expert assessment method, statistical processing of quantitative research results. In the course of our research, it was revealed that the teacher-student-student mentoring model in the system of continuous education at Kazan Federal University has three substantive blocks: the content of the teacher’s teaching activities and the requirements for the teacher; the content of pedagogical activity and requirements for the student; the content of educational activities of younger schoolchildren in the children's theater and the requirements for students. Requirements for teachers and students of the university: high professional competence; socio-economic competence; communicative competence; high level of professional and general culture. Primary schoolchildren form competencies according to their creative and acting abilities: the basics of theatrical culture; speech culture; emotional and imaginative development; musical development; basics of graphic design activities; foundations of collective creative activity. We have proved that the mentoring model "teacher-student-pupil" had an impact on all participants of the educational process: on teachers, on students, on pupils. In the course of theatrical activity, there were high-quality changes in the following: professional formation and development of students, a formation of professional competences of future teachers of the elementary school, creative and actor's development of younger school students; education of personal, social and family culture of children. The organization of individual mentoring, psychology and pedagogical scaffolding of the child actor, use of interactive games and technologies, subject role-playing games, use of receptions of staging, dramatization, staging, improvisation. The practical significance of this article is determined by the possibility of using its results in the future educational process in universities, primary schools, and in the management of educational institutions.

mentorship model, student, professor, pupil, formation, professional standard, development, professional competence, children's theater, primary school.